TikTok Aspect Ratio Calculator
Use this TikTok aspect ratio calculator to create full-screen vertical content that fits the app cleanly. TikTok is built around 9:16 portrait video, usually exported at 1080×1920. Calculate the matching width or height before cropping, editing captions or exporting a final file.
TikTok calculator
TikTok sizes
| Size / ratio | Label | Use-case |
|---|---|---|
| 1080×1920 | 9:16 | Recommended TikTok video size |
| 720×1280 | 9:16 | Smaller HD vertical export |
| 1440×2560 | 9:16 | High-resolution vertical source |
| 2160×3840 | 9:16 | 4K vertical master |
| 1080×1920 | 9:16 | TikTok photo-mode vertical images |
TikTok formula
height = width × 16 ÷ 9width = height × 9 ÷ 16Example: 1080px wide → 1920px high.
TikTok framing tips
TikTok rewards content that feels native to the vertical feed. A 16:9 landscape clip can upload, but it usually appears smaller because the app has to fit a wide rectangle inside a tall screen. A 9:16 video fills the available space and looks intentional.
When designing text overlays, keep the most important elements away from the very top and bottom because interface controls, captions and profile elements can cover the frame. The ratio calculation gives you the canvas; good framing keeps the content readable inside the app.
Focus on practical publishing outcomes. A 1080×1920 file fills the vertical feed and gives enough detail for normal mobile viewing. A 720×1280 export is still valid, but may look softer after compression. A higher-resolution 1440×2560 or 2160×3840 master can be useful for editing, but the final upload should still preserve the 9:16 shape.
Horizontal footage performs poorly visually on TikTok: the video becomes smaller inside the portrait frame, or the editor has to add background bars. The calculator solves the dimensions, while good framing keeps captions, faces and product details away from UI-heavy edges. If you also post short-form elsewhere, the 9:16 aspect ratio calculator and the YouTube aspect ratio calculator cover the same vertical shape.
Frequently asked questions
Related calculators and guides
- Aspect ratio calculator — the main calculator with custom ratios
- 9:16 aspect ratio calculator — the vertical shape TikTok shares with Reels and Shorts
- Instagram aspect ratio calculator — posts, Reels and Stories placements
- YouTube aspect ratio calculator — videos, Shorts and thumbnails
- Social media image sizes — recommended dimensions per platform